Cheap positive and negative circuit
Posted on Mar 28, 2007
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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The purpose of the terminal interface is to allow my computer to communicate with Minimum Mass...
The circuit was designed to work with an audio power amplifier which operated off +18v-0v-18v...
Take strobe-flash pictures the instant a pin pricks a balloon, a hammer breaks a lamp bulb or a...
This IC require less external components too, making it easier for a beginner to make this on...
VOUT to be 3V when the switch is open and 5V when the switch is closed. The simulation seems to...
This Fm rf ability amplifier has 2 transistors from Philips : BLV 10 and BLW 87. The 2 rf...
The purpose of this circuit was to create a ring in which LEDs or Lamps illuminate sequentially....
Construct universal power supplies, including: Low-voltage power supplies for operating...
This circuit uses a thin piezoelectric sensor to sense the vibrations generated by knocking on a...
An integrated circuit`s response to fast transients on its input supply is often an important...
Application of automatic plotters for measuring solar Schottky gate capacitance - voltage...
Fan power equipment traditional control methods is through manual or relay control, there is the...
At the left side (input AC) goes the secondary of a 220 volt (primary) 18 Volt (secondary) / 3...
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